On platforms with no support for the shdma dmaengine driver build is
currently failing with
drivers/built-in.o: In function `sh_mobile_sdhi_probe':
drivers/mmc/host/sh_mobile_sdhi.c:170: undefined reference to`shdma_chan_filter'
Fix the breakage by defining shdma_chan_filter to NULL in such
configurations.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@xxxxxxxxx>
---
This is for "next." Compile-tested only. I'll test it on hardware next
week, but I don't think it shall break anything.
include/linux/sh_dma.h | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/include/linux/sh_dma.h b/include/linux/sh_dma.h
index b64d6be..1fd8a20 100644
--- a/include/linux/sh_dma.h
+++ b/include/linux/sh_dma.h
@@ -99,6 +99,10 @@ struct sh_dmae_pdata {
#define CHCR_TE 0x00000002
#define CHCR_IE 0x00000004
+#if IS_ENABLED(CONFIG_SH_DMAE)
bool shdma_chan_filter(struct dma_chan *chan, void *arg);
+#else
+#define shdma_chan_filter NULL
+#endif
#endif
--
1.7.2.5
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